I have following problem with some bottom leafs. I use nutrients from Biobizz: Grow, Bloom, TopMax, CalMag, ph Down. Water pH is 6.5, feeding amount like in Biobizz chart. Middle and top of plant looks ok. Light schedule 20/4 (4h is dead zone). Is this fungus? Remove those leafs?
Solved
Leaves. Color - Yellow
Leaves. Color - Red or pink